Patents Assigned to Curtain University of Technology
  • Process for regenerating a layered double hydroxide
    Patent number: 7084085
    Abstract: A process for producing alumina from bauxite is described in which bauxite is treated with an alkali to form a mixture comprising a solution of aluminum-containing ions and alumina trihydrate is precipitated from the solution. The process comprises treatment of the solution before or after the precipitation step with a layered double hydroxide in order to remove impurities from the solution by intercalation into the layers in the double hydroxide. The double hydroxide may contain layers of the formula: [LiAl2(OH)6]+.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: August 1, 2006
    Assignee: Curtain University of Technology
    Inventors: Dermot Michael O'Hare, Andrew Michael Fogg, Gordon Michael Parkinson
  • Process for producing alumina
    Publication number: 20030064019
    Abstract: A process for producing alumina from bauxite is described in which bauxite is treated with an alkali to form a mixture comprising a solution of aluminum-containing ions and alumina trihydrate is precipitated from the solution. The process comprises treatment of the solution before or after the precipitation step with a layered double hydroxide in order to remove impurities from the solution by intercalation into the layers in the double hydroxide. The double hydroxide may contain layers of the formula: [LiAl2(OH)6]+.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 3, 2003
    Applicant: Curtain University of Technology
    Inventors: Dermot Michael O'Hare, Andrew Michael Fogg, Gordon Michael Parkinson